The liquid/solid two phase mass flowmeter is introduced. It is composed of the transducer for measuring flow, the transducer for measuring concentration and the mass flow totalizer.

,thus,resulting in the changes of such characteristic parameters as light intensity,phase,frequency,polarization and the like. Relevant physic parameters may be obtained from measuring these changes. Introduced are functions of logging parameters in production,especially the principles,advantages and applications of measuring flow,temperature,pressure,water cut,fluid density,GR,VSP and optics television logging in fiber sensor log operation.

According to the analysis of test data, The author has not oniy verified the correctness of the theory but also found the solution to several urgent problems in using the method of measuring flow.

Pulse flow can generate influence to the precision of measuring flow and eventuate magnitude error, for which yield the error for water-level, depth and flow when measuring.

The bit-pattern-based flow definition method provided the flexible flow definition and made the system realize measuring flow in IPv4 and/or IPv6.The simulations showed that the whole system can run well.

Pulse flow can generate influence to the precision of measuring flow and eventuate magnitude error, for which yield the error for water-level, depth and flow when measuring.

In this paper,represents an experimental apparatus designed by the authors for measuring flowing film rate,which is composed of microelectrode,milliammeter,light- wave oscilloscope and measuring electric circuit.The working principle of the apparatus is based on the fact,that is,an electrolyte is added to the flowing film to be measured and flows with it at the same rate.a pair of microelectrodes adapted specially are so installed in the flowing film that to keep apart with...

In this paper,represents an experimental apparatus designed by the authors for measuring flowing film rate,which is composed of microelectrode,milliammeter,light- wave oscilloscope and measuring electric circuit.The working principle of the apparatus is based on the fact,that is,an electrolyte is added to the flowing film to be measured and flows with it at the same rate.a pair of microelectrodes adapted specially are so installed in the flowing film that to keep apart with a certain distance along its direction. The conductivity of the fluid medium is improved,thus inducing a change of signal in measuring circuit as the electrolytic solution flows together with the flowing film. A complete process of the signal change may automatically be recorded with a light- wave oscilloscope,thus the time consumed by the electrolyte to pass through electrodes can be accurately determined and calculation to the flowing film rate may possibly be made through a standard formula.This apparatus can be used to measure a flowing film rate not only under general condition but also under revolving force field.

The present paper deals with an elementary principle of a new measurement of runoff with very low discharge by means of resistance measuring-flow, and the nonlinear Flow-Voltage relationships with the resistance measuring-flow. A method of linearization handling is provided to make the Measuring-Runoff Flume in a better linear relationship. The analysis of dynamic response charactertics of Resistance Measuring-flow Flume is based on system dynamics theory, as a...

The present paper deals with an elementary principle of a new measurement of runoff with very low discharge by means of resistance measuring-flow, and the nonlinear Flow-Voltage relationships with the resistance measuring-flow. A method of linearization handling is provided to make the Measuring-Runoff Flume in a better linear relationship. The analysis of dynamic response charactertics of Resistance Measuring-flow Flume is based on system dynamics theory, as a result, system parameters ωn and ζ are obtained for judging regulating-storage of measuring-flow device' The Measuring-flow Flume has been applied to measure small discharge in the Hydro-logic Runoff Laboratory. As it belongs to instantaneous flow-rate measurement method, the runoff hydrography measured is very clear as regards its duration, peak discharge, lag of time, and relevant parameters. In addition, the device has a higher stability of electronic circuit and better signal-to-noise ratio, and the problem of electolytic action at electrodes surface due to impurity of the water has been solved, so it is more convenient to make research of the rainfall-runoff relationship in laboratory. Finally, in this paper a comparison of cumulative sum of hydrography from Resistance Measuring-flow Flume with cumulative water-volume-method is given, and satisfactory results have been obtained.

This paper is based on the summation of water discharge measurements in arge hydroelectric plants. By means of the theory of numerical analysis, the author has advanced an analysis caleulation for measuring flow rate through large cross sections.